(SEM II) THEORY EXAMINATION 2023-24 FUNDAMENTALS OF ELECTRONICS ENGINEERING

This document contains the complete B.Tech (Semester II) Theory Examination Question Paper for Fundamentals of Electronics Engineering, Subject Code BEC201, for the academic year 2023–24. The question paper evaluates a student’s understanding of the core principles of electronics, including semiconductor devices, diode behavior, transistor configurations, operational amplifiers, Boolean algebra, digital logic circuits, communication systems, and wireless technologies.

The paper is divided into three main sections, each assessing different levels of knowledge—from basic conceptual recall to detailed theoretical analysis and practical circuit understanding.

SECTION A — Short-Answer Questions (2 marks each)

This section tests fundamental electronic concepts through seven short questions. Topics include:

Functions of clippers and clampers

Difference between half-wave and full-wave rectifiers

Operating principle of BJT

Differential operation in Op-Amps

Importance of universal gates

Meaning of combinational logic

Concept of frequency reuse in cellular networks

These questions check quick recall and understanding of essential electronic components and systems.

SECTION B — Analytical & Circuit-Based Questions (7 marks each)

Students must attempt any three questions. These involve deeper conceptual and circuit-level knowledge:

Drawing V–I characteristics of semiconductor diodes and explaining voltage multipliers

Discussing CC configuration of BJT

Designing a summing amplifier using Op-Amp

Explaining core Boolean algebra laws and theorems

Necessity of modulation and techniques of AM demodulation

This section examines medium-level problem solving and circuit behavior understanding.

SECTION C — Long Descriptive Questions (7 marks each)

This section includes detailed questions on:

Zener breakdown mechanisms

Structure and working of LEDs

Construction and gate control in JFETs

Characteristics and operation of MOSFETs (depletion vs. enhancement mode)

Inverting amplifier configuration using Op-Amp

Ideal characteristics of operational amplifiers

K-Map simplification and logic gate implementation

Realizing basic logic gates using NAND gate

Basics of wireless communication, radar principles

Evolution of cellular networks from 1G to 5G

These questions evaluate in-depth theoretical knowledge and application in real electronic systems.

Sample Questions from the Paper (1–2 Only)

“How does a half-wave rectifier differ from a full-wave rectifier?”
— Tests basic understanding of rectifier operation and efficiency.

“Explain why modulation is necessary in communication systems and describe AM demodulation techniques.”
— Evaluates understanding of communication principles and signal processing.

These examples represent the overall depth and style of the questions included in the paper.

Coverage of the Question Paper

Apart from the sample questions shown above, the paper includes many other similar questions related to:

Semiconductor device behavior

Transistor biasing and configurations

Op-Amp circuit design

Boolean logic, digital circuits & K-maps

Wireless, radar, satellite & cellular communication

Field-effect transistor technology

Logic gate implementation and circuit simplification

These questions follow the university syllabus and help students build strong fundamentals in electronics.

Purpose of the Document

This question paper gives students a complete understanding of:

The exam pattern

Expected question types

Conceptual weightage

Important chapters and topics

Level of theoretical and circuit-based understanding required

Additional similar questions and extended exercises are available in the accompanying notes, helping students prepare thoroughly for the subject.